NISSAN LATIO 2009 Service Repair Manual

BR
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BRAKE TUBE AND HOSE
Hydraulic Circuit INFOID:0000000004684932
With ABS
Without ABS
CAUTION:

Fluids and Lubricants " .
• Never reuse drained brake fluid.
Front Brake Tube and Hose INFOID:0000000004305896
REMOVAL
1. Drain brake fluid. Refer to BR-9, " Drain and Refill " .
2. Using a flare nut wrench, remove brake tube from brake hose.
3. Remove union bolt and discard the copper washers. CAUTION:
Do not reuse copper washers
4. Remove brake hose from caliper assembly.
5. Remove lock plate, and remove brake hose.
INSTALLATION
1. Assemble union bolt and new copper washers on to brake hose. CAUTION:
Do not reuse copper washers
2. Position the L-shape metal fitting of the brake hose to the brake caliper assembly positioning hole.
3. Tighten union bolt to the specified torque. Refer to BR-11," Hydraulic Circuit " .
4. Connect brake hose to brake tube, and temporarily tighten flare nut by hand as much as possible.
5. Secure brake hose and brake tube with lock plates.
6. Tighten flare nut to the specified torque with a suitable tool. Refer to BR-11, " Hydraulic Circuit " .
7. Bleed the air from the brake hydraulic system. Refer to BR-9, " Bleeding Brake System " .
Rear Brake Tube and Hose INFOID:0000000004305897
REMOVAL
1. Drain brake fluid. Refer to BR-9, " Drain and Refill " .
2. Remove brake tube from brake hose using a suitable tool.

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3. Remove lock plate, and remove brake hose.
INSTALLATION 1. Connect brake hose to brake tube, and temporaril y tighten flare nut by hand as much as possible.
2. Secure it to the bracket with the lock plate.
3. Tighten flare nut to the specified torque using a suitable tool. Refer to BR-11, " Hydraulic Circuit " .
4. Bleed the air from the brake hydraulic system. Refer to BR-9, " Bleeding Brake System " .
Inspection After Installation INFOID:0000000004305898
CAUTION:
• Always disassemble the parts and retighten their fitti ngs, if a brake fluid leak is detected. Replace
applicable part with a new one, if damaged part is detected.
• If leak is detected at the connections, retighten it or replace the damaged part.
1. Check brake hose, tube, and connections for fluid leak s, damage, twisting, deformation, contact with other
parts, and loose connections.
2. While depressing pedal under a force of 785 N (80 kg-f, 177 lb-f) with the engine running for approxi- mately 5 seconds, check for fluid leaks from each part of the brake hydraulic system. SFIA1120E

" Hydraulic Circuit " .
Inspection INFOID:0000000004305900
CAUTION:
• Carefully monitor brake flui d level at master cylinder.
• Use the recommended new brake fluid. Refer to MA-14, " Fluids and Lubricants " .
• Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is
splashed on paint areas, wash it away with water immediately.
1. Connect a suitable brake fluid pressure gauge to air bleeders of front and rear brakes on either LH and RH side.
2. Bleed air from the brake fluid pressure gauge.
3. Check fluid pressure specific ation by depressing the brake pedal.
• If output pressure is out of specification, replace the dual proportioning valve.
Unit: kPa (kg/cm2
, psi)
4. Bleed air after disconnecting the brake fluid pressure gauge. Refer to BR-9, " Bleeding Brake System " .

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BRAKE MASTER CYLINDER
On-Board Inspection INFOID:0000000004305901
LEAK INSPECTION • Check for leaks around the master cylinder installation surf ace, the reservoir tank installation surface, and all
the brake tube connections.
Removal and Installation INFOID:0000000004305902
CAUTION:
Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is
splashed on painted areas, immediately wipe th em with cloth and wash it away with water.
REMOVAL 1. Drain the brake fluid. Refer to BR-9, " Drain and Refill " .
2. Remove the battery. Refer to SC-7, " Removal and Installation " .
3. Remove the air duct. Refer to EM-139, " Removal and Installation " .
4. Remove the air cleaner. Refer to EM-139, " Removal and Installation " .
5. Disconnect the brake fluid level switch harness connector.
6. Disconnect the clutch hose from the reservoir tank, if equipped.
7. Remove the brake tube from master cylinder using a suitable tool.
8. Remove the master cylinder assembly nuts, and remove master cylinder assembly. 1. Reservoir tank 2. Master cylinder 3. Brake booster
4. Clevis 5. Spacer 6. Gasket
Up

Fluids and Lubricants " .
• Never reuse drained brake fluid.
• Check if the rod of primary piston has dust or scratches.
1. Install master cylinder to brake booster assembly, and tighten nuts to the specified torque.
CAUTION:
• Do not damage or strain rod of primary piston.
• Apply silicone grease for O-ring, primary piston rod and to inside of booster.
2. Install brake tube to master cylinder, and temporarily tighten the flare nuts on the brake tube to master cyl-
inder by hand.
3. Install brake tube to brake hose, then tighten flare nut to the specified torque using a flare nut torque
wrench. Refer to BR-11, " Hydraulic Circuit " .
4. Connect the clutch hose to the reservoir tank, if equipped.
5. Connect brake fluid level switch harness connector.
6. Refill with new brake fluid and bleed the air from the brake hydraulic system. Refer toBR-9, " Bleeding
Brake System " .
Disassembly and Assembly INFOID:0000000004305903
COMPONENTS
DISASSEMBLY

B
R
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C
AUTIO N:
W hile w ork in g, c o ver p rim ary p is to n r o d w it h c lo th t o p re ven t it f r o m b ein g d am ag ed .
1 . Secu re fla nge o f c yli n der b ody in v is e a s s h ow n.
C AUTIO N:
• Use c o pper p la te o r c lo th t o c o ver f la n ge w hen s ecu rin g
i n v is e.
• W hen s ecu rin g m aste r c ylin der a ssem bly in a v is e, b e
s u re n ot t o o ver-tig hte n .
2 . Usin g a p in -p unch [c o m merc ia l s e rv ic e to ol: d ia m ete r a ppro x. 4
m m ( 0 .1 6 in )], r e m ove p in f r o m r e se rv o ir ta nk.
3 . Rem ove m aste r c ylin der a sse m bly fr o m v is e .
4 . Rem ove r e se rv o ir ta nk a nd g ro m met fr o m c ylin der b ody.
5 . While p ush in g p rim ary p is to n, r e m ove p is to n s to pper th ro ugh
s e co ndary ta nk b oss h ole in th e c ylin der b ody.
6 . Rem ove s n ap r in g w it h p ush in g p rim ary p is to n.
C AUTIO N:
B e c are fu l n ot t o p op o u t p is to n .
7 . Hold in g r o d o f p rim ary p is to n, r e m ove p rim ary p is to n a sse m bly ,
p la te a nd g uid e a sse m bly b y p ull in g s tr a ig ht to p re ve nt p is to n
c u p fr o m b ein g c a ught b y th e in ner w all o f c ylin der.
8 . Rem ove p la te a nd g uid e a sse m bly fr o m p rim ary p is to n.
C AUTIO N:
B e c are fu l n ot t o d am ag e r o d f r o m t h e in ner w all o f p la te . W
FIA 051 5E W
FIA 051 6E B
R A056 1D W
FIA 051 7E

SBR089C
SFIA1469E

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5. Be careful not to damage rod of primary piston with the cloth.
Then insert snap ring to cylinder body while pushing primary pis-
ton.
CAUTION:
Make sure that snap ring is securely engaged in cylinder
body inner diameter groove.
6. Apply brake fluid to a grommet, and press it into reservoir tank to install.
7. Install reservoir tank to cylinder body. CAUTION:
Pay attention to the orientatio n of reservoir tank. Make sure
reservoir tank is fully seated on master cylinder.
8. Secure flange of cylinder body in vise as shown. CAUTION:
• Use copper plate or cloth to cover flange for securing in
the vise.
• When securing master cylinder assembly in a vise, be sure not to over-tighten.
• Be sure to secure the flange part with the brake tube
installation side of cylinder body facing up (chamfered pin
insert hole of cylinder body facing up).
9. Using a pin punch [commercial service tool: diameter approx. 4 mm (0.16 in)], insert the reservoir tank pin into the pin hole. WFIA0515E

WFIA0521E